| stationary cataract | A cataract that does not progress. (05 Mar 2000) |
|---|
| stationary | 1. Not moving; not appearing to move; stable; fixed. "Charles Wesley, who is a more stationary man, does not believe the story." (Southey) 2. Not improving or getting worse; not growing wiser, greater, better, more excellent, or the contrary. 3. Appearing to be at rest, because moving in the line of vision; not progressive or retrograde, as a planet. <physiology> Stationary air, the air which under ordinary circumstances does not leave the lungs in respiration. Stationary engine. A steam engine thet is permanently placed, in distinction from a portable engine, locomotive, marine engine, etc. Specifically: A factory engine, in distinction from a blowing, pumping, or other kind of engine which is also permanently placed. Origin: L. Stationarius: cf. F. Stationnaire. Cf. Stationer. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| stationary anchorage | Anchorage in which the resistance to the movement of one or more teeth comes from the resistance to bodily movement of the anchorage unit; a questionable concept since the selected teeth remain only relatively stable. (05 Mar 2000) |
| stationary phase | The plateau of the growth curve after log growth in a culture, duringwhich cellnumber remains constant. New cells are produced at the same rate as oldercells die. (09 Oct 1997) |
| annular cataract | Congenital cataract in which a central white membrane replaces the nucleus. Synonym: disk-shaped cataract, life-belt cataract, umbilicated cataract. (05 Mar 2000) |
| arborescent cataract | An obsolete term for dendritic cataract. (05 Mar 2000) |
| atopic cataract | A cataract associated with atopic dermatitis. (05 Mar 2000) |
| axial cataract | A lenticular opacity in the visual axis of the lens. (05 Mar 2000) |
| black cataract | A cataract in which the lens is hardened and of a dark brown colour. In the 19th century, German black cataract meant gutta severa (q.v.). Synonym: cataracta brunescens, cataracta nigra. (05 Mar 2000) |
| blue cataract | Coronary cataract of bluish colour. Synonym: cataracta cerulea. (05 Mar 2000) |
| capsular cataract | A cataract in which the opacity affects the capsule only. (05 Mar 2000) |
| capsulolenticular cataract | A cataract in which both the lens and its capsule are involved. See: membranous cataract. (05 Mar 2000) |
| galactose cataract | A neonatal cataract associated with intralenticular accumulation of galactose alcohol. See: galactosaemia. (05 Mar 2000) |
| radiation cataract | A cataract caused by excessive or prolonged exposure to ultraviolet rays, X-rays, radium, beta rays, gamma rays, heat, or radioactive isotopes. (05 Mar 2000) |
| vascular cataract | Congenital cataract in which the degenerated lens is replaced with mesodermal tissue. Synonym: cataracta adiposa, cataracta fibrosa. (05 Mar 2000) |
| reduplicated cataract | A type of congenital cataract with opacities situated at various levels in the lens. (05 Mar 2000) |